PubMed Central, : RMMJ Rambam Maimonides Medical Journal Rambam Health Care Campus 2026; 17(1): e0001. ISSN: 2076-9172Published online 2026 January 28. doi: 10.5041/RMMJ.10562

Table 2.

Treatment and Histological Outcome Following Endoscopic Resection of Ampullary NETs.

Parameter	Overall (n=14)	%
Treatment
En bloc resection	13	92.9%
IDE treatment	1	7.14%

Histology on papillectomy
NET	14	100%

NET grading
G1 (Ki-67 <3%)	8	57.1%
G2 (Ki-67 3%–20%)	6	42.9%
G3 (Ki-67 >20%)	0	0%

Resection margin
R0	11	78.6%
R1	2	14.3%
R2	1	7.14%

G1, grade 1 (Ki-67 <3%); G2, grade 2 (Ki-67 3%–20%); IDE, intraductal extension; NET, neuroendocrine tumors; R0, complete resection; R1, incomplete resection with microscopic residue; R2, incomplete resection with macroscopic residue.

RMMJ Rambam Maimonides Medical Journal Rambam Health Care Campus 2026; 17(1): e0001. ISSN: 2076-9172

Published online 2026 January 28. doi: 10.5041/RMMJ.10562